National Weather Service United States Department of Commerce
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Last Map Update: Sun, Sep 20, 2026 at 7:20:40 am MDT

A dangerous surge of monsoon moisture will develop Tuesday through at least Wednesday evening with widespread showers and thunderstorms, many with heavy rainfall and some with flash flooding.
A dangerous surge of monsoon moisture will increase the risk of flash flooding, as well as river and tributary flooding, Tuesday through Wednesday night.
High temps below average for this time of year, especially during the work week. Monsoon surge with heaviest rain Tuesday through Wednesday night. Heavy rainfall will become more localized Thursday and Friday with a continued risk of flash flooding.
With the active monsoon returning pattern this week, be prepared to take action if a Flash Flood Warning is issued for your area! Have multiple ways to receive NWS messages.

 

 
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